User Delio Mugnolo

3 votes

0 answers

78 views

Embedding theorems for Dini continuous functions

asked Nov 20, 2023 at 17:28

1 vote

0 answers

103 views

Sobolev embedding into the space of bounded, uniformly continuous function?

asked Jul 18, 2023 at 13:37

0 votes

0 answers

129 views

Compact embedding of Lipschitz continuous functions

asked Nov 30, 2021 at 16:19

3 votes

0 answers

83 views

Compact Sobolev embedding with boundary conditions

asked Jun 17, 2021 at 14:51

6 votes

1 answer

331 views

Optimal constant in Sobolev embedding

asked Oct 19, 2020 at 21:29

5 votes

1 answer

618 views

Boundedness of integral operators on spaces of continuous functions

asked Nov 28, 2019 at 7:31

2 votes

2 answers

724 views

Bound on the ratio of harmonic and arithmetic mean

asked Jul 18, 2019 at 10:13

1 vote

0 answers

36 views

A variation on Sylvester equation

asked Oct 9, 2018 at 14:01

8 votes

0 answers

285 views

Lax pairs in an abstract formalism

asked Dec 18, 2017 at 11:14

4 votes

1 answer

253 views

An elementary inequality for graph Laplacians

asked Dec 3, 2017 at 23:32

0 votes

0 answers

69 views

Sobolev embedding for a specific family of weighted Sobolev spaces

asked Oct 4, 2017 at 9:08

2 votes

0 answers

116 views

explicit formulae of heat kernel on graphs

asked Jul 18, 2017 at 8:59

1 vote

1 answer

1k views

largest adjacency eigenvalue of line graphs

asked Feb 13, 2017 at 13:43

2 votes

1 answer

303 views

How many line graphs are there?

asked Dec 10, 2016 at 15:23

2 votes

0 answers

95 views

essential self-adjointess for operators that can be factorized as $TT^*$

asked Dec 7, 2016 at 13:32

1 vote

0 answers

268 views

incidence matrix

asked Nov 21, 2016 at 23:21

3 votes

2 answers

407 views

A possible norm on a subspace of $C^\infty([0,1])$?

asked May 8, 2016 at 21:43

2 votes

1 answer

290 views

Are Ritt operators mean ergodic?

asked Apr 7, 2016 at 9:37

9 votes

1 answer

3k views

Hard maths on viXra? [closed]

asked Feb 3, 2016 at 23:08

3 votes

2 answers

407 views

Airy's equation on $\mathbb R_-$

asked Jan 13, 2016 at 16:09

8 votes

1 answer

250 views

A generalisation of $C_0$-semigroups

asked Dec 14, 2015 at 9:40

7 votes

0 answers

232 views

orthogonal projector onto the set of convex functions

asked Nov 30, 2015 at 12:29

2 votes

2 answers

607 views

Matrices with real spectrum

asked Feb 10, 2015 at 21:11

5 votes

2 answers

207 views

significance of the Fučík spectrum

asked Nov 5, 2014 at 11:07

5 votes

2 answers

937 views

eigenvalue estimate of the adjacency matrix

asked Oct 9, 2014 at 8:43

11 votes

1 answer

548 views

doubly-stochastic isomorphisms of graphs

asked May 9, 2014 at 14:04

1 vote

1 answer

184 views

a class of directed hypergraphs

asked Apr 16, 2014 at 19:48

1 vote

1 answer

504 views

almost equitable partitions and spectra

asked Feb 11, 2014 at 8:58

13 votes

3 answers

3k views

history of calculus of several variables

asked Jan 29, 2014 at 13:32

8 votes

3 answers

7k views

Spectrum of an adjacency matrix

asked Jan 8, 2014 at 16:09

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50 Questions

Embedding theorems for Dini continuous functions

Sobolev embedding into the space of bounded, uniformly continuous function?

Compact embedding of Lipschitz continuous functions

Compact Sobolev embedding with boundary conditions

Optimal constant in Sobolev embedding

Boundedness of integral operators on spaces of continuous functions

Bound on the ratio of harmonic and arithmetic mean

A variation on Sylvester equation

Lax pairs in an abstract formalism

An elementary inequality for graph Laplacians

Sobolev embedding for a specific family of weighted Sobolev spaces

explicit formulae of heat kernel on graphs

largest adjacency eigenvalue of line graphs

How many line graphs are there?

essential self-adjointess for operators that can be factorized as $TT^*$

incidence matrix

A possible norm on a subspace of $C^\infty([0,1])$?

Are Ritt operators mean ergodic?

Hard maths on viXra? [closed]

Airy's equation on $\mathbb R_-$

A generalisation of $C_0$-semigroups

orthogonal projector onto the set of convex functions

Matrices with real spectrum

significance of the Fučík spectrum

eigenvalue estimate of the adjacency matrix

doubly-stochastic isomorphisms of graphs

a class of directed hypergraphs

almost equitable partitions and spectra

history of calculus of several variables

Spectrum of an adjacency matrix